Preemergency
[计] 备用, 备急, 辅助
🗣️ 情景例句
He keeps himself fit by running 5 miles every day.
他每天跑五公里以保持身体健康。
What's burning on the stove?
炉子上炖的是什么？
To our dismay, we saw that there were snails everywhere:
让人沮丧的是，我们发现到处都是蜗牛：